2007P

[fiddle-fart]

To me it looks like extra columns on 2 - 5



Thanks Mike

[eagames]

I think...

The thing at the top of the bay is a die chip.
(CUDs must reach the rim)

The die is reversed of the coin so the bays are raised on the die. As the die wears or they polish it the raised edges get rounded. Since the bays on the coin are reversed of the die the rounded edges on the die become filled in corners on the coin making those extra columns. (other than the ones that are part of the design on certain columns)

[Bob P]

Mike,
I think what you are seeing is actually part of the column fluting lines, but it is a little difficult to say based on the photo. One other thing of note...What you refer to as a 'cud' in actually a die chip or break. A cud always encompasses a rim to rim break of the die. A retained cud would still have the piece on the die enabling it to still strike a coin, but with a die crack surrounding the piece about to break off. A cud would be a raised portion on the coin that was not struck due to the missing piece of the die.